The human body is everything that makes up, well, you. The basic parts of the human body are the head, neck, torso, arms and legs.

Body systems

Our bodies consist of a number of biological systems that carry out specific functions necessary for everyday living.

1. The job of the circulatory system is to move blood, nutrients, oxygen, carbon dioxide, and hormones, around the body. It consists of the heart, blood, blood vessels,arteries and veins.

2. The digestive system consists of a series of connected organs that together, allow the body to break down and absorb food, and remove waste. It includes the mouth, esophagus, stomach, small intestine, large intestine, rectum, and anus. The liver and pancreas also play a role in the digestive system because they produce digestive juices.

3. The endocrine system consists of eight major glands that secrete hormones into the blood. These hormones, in turn, travel to different tissues and regulate various bodily functions, such as metabolism, growth and sexual function.

4. The immune system is the body's defense against bacteria, viruses and other pathogens that may be harmful. It includes lymph nodes, the spleen, bone marrow, lymphocytes (including B-cells and T-cells), the thymus and leukocytes, which are white blood cells.

5. The lymphatic system includes lymph nodes, lymph ducts and lymph vessels, and also plays a role in the body's defenses. Its main job is to make is to make and move lymph, a clear fluid that contains white blood cells, which help the body fight infection. The lymphatic system also removes excess lymph fluid from bodily tissues, and returns it to the blood.

6. The nervous system controls both voluntary action (like conscious movement) and involuntary actions (like breathing), and sends signals to different parts of the body. The central nervous system includes the brain and spinal cord. The peripheral nervous system consists of nerves that connect every other part of the body to the central nervous system.

7. The body's muscular system consists of about 650 muscles that aid in movement, blood flow and other bodily functions. There are three types of muscle: skeletal muscle which is connected to bone and helps with voluntary movement, smooth muscle which is found inside organs and helps to move substances through organs, and cardiac muscle which is found in the heart and helps pump blood.

8. The reproductive system allows humans to reproduce. The male reproductive system includes the penis and the testes, which produce sperm. The female reproductive system consists of the vagina, the uterus and the ovaries, which produce eggs. During conception, a sperm cell fuses with an egg cell, which creates a fertilized egg that implants and grows in the uterus.

9. Our bodies are supported by the skeletal system, which consists of 206 bones that are connected by tendons, ligaments and cartilage. The skeleton not only helps us move, but it's also involved in the production of blood cells and the storage of calcium. The teeth are also part of the skeletal system, but they aren't considered bones.

10. The respiratory system allows us to take in vital oxygen and expel carbon dioxide in a process we call breathing. It consists mainly of the trachea, the diaphragm and the lungs.

11. The urinary system helps eliminate a waste product called urea from the body, which is produced when certain foods are broken down. The whole system includes two kidneys, two ureters, the bladder, two sphincter muscles and the urethra. Urine produced by the kidneys travels down the ureters to the bladder, and exits the body through the urethra.

12. The skin, or integumentary system, is the body's largest organ. It protects us from the outside world, and is our first defense against bacteria, viruses and other pathogens. Our skin also helps regulate body temperature and eliminate waste through perspiration. In addition to skin, the integumentary system includes hair and nails.

Vital organs

Humans have five vital organs that are essential for survival. These are the brain, heart, kidneys, liver, and lungs.

The human brain is the body's control center, receiving and sending signals to other organs through the nervous system and through secreted hormones. It is responsible for our thoughts, feelings, memory storage and general perception of the world.

The human heart is a responsible for pumping blood throughout our body.

The job of the kidneys is to remove waste and extra fluid from the blood. The kidneys take urea out of the blood and combine it with water and other substances to make urine.

The liver has many functions, including detoxifying of harmful chemicals, breakdown of drugs, filtering of blood, secretion of bile and production of blood-clotting proteins.

The lungs are responsible for removing oxygen from the air we breathe and transferring it to our blood where it can be sent to our cells. The lungs also remove carbon dioxide, which we exhale.

Anatomy of the Human Body

1. Skeletal system

system is comprised of a frame arrangement or a variety of bone that are interrelated to one another. In the head consists of 8 bones, skeleton chest bone pieces 25, 14 facial bones, spine and hips 26 pieces, 6 pieces ear bones, arm 64, the tongue 1 and the leg bones 62 pieces. The function of the framework are:

a. Can hold parts of the body so as not to collapse b. Can protect all delicate organ like the heart, lungs and brain. c. Framework is a place of attachment of the muscles in the body d. Can give shape to a building body. e. To move your body muscle melelui f. Place the manufacture of blood cells, especially red blood cells.

2. Muscle System Muscle system which serves to move the body. Muscle is what allows humans

to perform all the activities of the running to lift heavy objects. The muscular system in humans consists of 600 muscles.

3. Bloodstream system Circulatory system or circulation and cardiovascular function is to pump blood

throughout the body. Human circulatory system are the heart, shaped conifers and lying upside down. The inside of the heart consists of four spaces, namely left atrium, right atrium, left ventricle and the right ventricle. Between the left atrium and left ventricle are interconnected, as well as the right atrium and right ventricle are interconnected to one another.

4. Digestive system

That is the human organ system function receiving food, digesting food, digestion of food, absorb nutrients carried into the blood stream, and removing part or leftovers that can not be digested by the body. The digestive system from the mouth to the anus that of the mouth, throat, esophagus, stomach, small intestine, colon, rectum and ends at the anus.

5. Respiratory system Organs used for breathing are the lungs. In the respiratory system, oxygen is a

very major requirement, since humans breathe in oxygen and remove carbon dioxide and water vapor.

6. Endocrine System Systems that control the glands in the absence of channels of communication

that produce the hormone or hormones in the body. Hormone itself is a chemical messenger that is synthesized and secreted by the endocrine glands. Endocrine glands consist of the thyroid gland, himofise gland, hypothalamus, parathyroid, pineal, adrenal.

7. Immune System

The immune system or the immune system is located throughout the body, especially in the spleen. The immune system is the body's defense system against infections or attacks of foreign molecules such as bacteria, viruses, and parasites that cause disease.

8. Sense system

Sensory system in humans serve as the recipient stimuli from the surrounding environment. Humans have five senses commonly called the five senses is the sense of vision or eyes, the sense of hearing or ear, or nose sense of smell, sense of touch or kulut and sense of taste or tongue. Each sensory parts have different functions.

9. Lymphatic System That is the circulatory system that serves to drain the lymph in the human

body. The lymphatic system consists of lymph vessels and lymphoid organs. Some lymphatic function include: transporting lymphocytes, restoring fluids and protein into the blood circulation, crushing and screening of microorganisms, in case of an infection, the lymph glands can produce antibodies.

10. Excretion system Excretory organs in the human body consists of the kidneys, liver, skin and

lungs. Kidney function in passing urine, liver function secrete bile pigment or ure, skin sweat function, while lung function in removing water vapor and carbon dioxide.

11. Nervous system On the human nervous system is composed of the central nervous system and

edges. The central nervous system consists of the brain and spinal cord. While in the peripheral nervous system consists of the autonomic and somatic nervous system. The nervous system is tasked to deliver stimulation of the receptor to be responded by the human body. In response to stimuli, there are some important components that should be owned by the nervous system, namely: receptors, and effector impulse conductor.

12. Reproductive system Namely a series of internal organs and interaction that serves to breed. The

female reproductive system centered on ovarian function to produce ova and hormones. Female reproductive organs consist of the uterus, ovaries, vagina coitus. The ovaries are the sex glands that produce egg cells. While the reproductive organs in men is testicular function as producing sperm and testosterone.